Opens a new window in Safari and sends the HTML or XHTML code of the web page you're viewing to W3C Markup Validation Service. It then opens a second window to validate the CSS code. W3C will display any errors it can detect in the HTML / XHTML and CSS code. I included two scripts in the folder. The script named 'Safari Web Site Validator Go' does the same thing as 'Safari Web Site Validator' except there isn't a dialog box when you launch it.